What is the the steadiest firing position?

According to scientific evidence, earth's earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere. Which statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct. A.

A man exerts 1000 Newtons of force to move a very large couch 2 meters. If it takes him 5 seconds to move the couch, how much power does it require?

Why a control is needed in a valid experiment

In the textbook we learned the definition of acceleration, a=Δv/Δt, and we learned that the cause of acceleration involves net force, where a=F/m. Equate these two equations for acceleration and express, for constant mass, FΔt

Tim's car breaks down just down the street from his house. he and his friends decide to try to push it to his house. using newton's three laws of motion, explain why this will be difficult.

What happens after the Gulf Stream travels north? It cools and flows away from the pole, causing cooler climates farther south. It circles the poles, becoming ice. It crashes with incoming warm water.

A crane lifts a 35,00-N steel grinder a distance of 25m in 45s. How much power did the crane require to life the grinder? Write your answer in Kilowatts.

An example of objects the move in revolution

How many hops does a kangoroo do in 1 day

What are the average velocity and average acceleration of the tip of a 2.4 cm long hour hand of a clock?